GAR | GRVA/2021/7

GRVA/2021/7

UN R79: Proposal for a Supplement to the 03 series of amendments

Source(s)

EME

Date

20 Nov 2020

Status

Withdrawn

Subject

UN R79 Steering Equipment

Meeting(s)

GRVA | Session 9 | 1-5 Feb 2021

Agenda item 6. (a) Automatically Commanded Steering Function

Proposal to allow a grace time in order to deal with unexpected changes in the radius of the curvature of a bend by permitting the system to exceed the ay_smax limit of 3 m/s² by a maximum of 40 per cent for up to two seconds.

Downloads

UNECE server

Related documents

Excerpts from session reports

GRVA | Session 5 | 10-14 Feb 2020

43. The expert from AVERE introduced ECE/TRANS/WP.29/GRVA/2020/7 and ECE/TRANS/WP.29/GRVA/2020/8 (and their respective amendments in GRVA-05-08 and GRVA-05-24), proposing amendments to the ACSF provisions, resuming the discussion started in September 2019. He mentioned the support provided by the expert from the United Kingdom. The experts from Sweden and France provided comments. The experts from Denmark, Finland, the Netherlands and Norway expressed concerns. The expert from the Netherlands explained that the dynamics problems reported by the manufacturer, member of AVERE, were not due to the provisions in the Regulation but were due to design choices made by this manufacturer. The experts from the European Commission, Korea and United Kingdom and Northern Ireland supported the proposals; the expert from OICA, too. The expert from the Russian Federation proposed alternative proposals (GRVA-05-59) improving the text. The expert from the United Kingdom proposed GRVA-05-57 aimed at addressing the comments expressed by the expert from Sweden. GRVA reviewed all revised proposals produced by the expert from AVERE during the week but remained divided. GRVA agreed to review a revised proposal at the sixth session of GRVA, if time allows.

44. The Chair of GRVA noted the division of GRVA on this matter. He proposed that GRVA performs a general review of the Regulation at its September 2020 session.

GRVA | Session 9 | 1-5 Feb 2021

47. The expert from AVERE introduced ECE/TRANS/WP.29/GRVA/2021/7, a revised amendment proposal to the Automatically Commanded Steering Function (ACSF) of Category B1 provisions in UN Regulation No. 79 (maximum lateral acceleration ay_max). The expert from the Netherlands opposed to the proposal, as it could generate mode confusion and overreliance on the market. The experts from France, the European Commission and UK supported the proposal. The expert from Germany suggested that the proposal is further discussed by a task force. GRVA agreed to keep the proposal on hold.

GRVA | Session 11 | 27 Sep-1 Oct 2021

72. GRVA noted that the review of ECE/TRANS/WP.29/GRVA/2021/9, ECE/TRANS/WP.29/GRVA/2021/10 and ECE/TRANS/WP.29/GRVA/2021/11 by the Task Force on ADAS was still ongoing. The expert from AVERE withdrew ECE/TRANS/WP.29/2021/7.